Sunglasses

Sunglasses or sun glasses are a form of protective eyewear designed primarily to prevent bright sunlight and high-energy visible light from damaging or discomforting the eyes. They can sometimes also function as a visual aid, as variously termed spectacles or glasses exist, featuring lenses that are colored, polarized or darkened. In the early 20th century they were also known as sun cheaters (cheaters being an American slang term for glasses).

The American Optometric Association recommends sunglasses whenever a person is in the sun. to protect the eyes from ultraviolet radiation (UV) and blue light, which can cause several serious eye problems. Its usage is mandatory immediately after some surgical procedures such as IntraLASIK and recommended for a certain time period in dusty areas, when leaving the house and in front of a TV screen or computer monitor after LASEK. Sunglasses have long been associated with celebrities and filmactors primarily from a desire to mask their identity. Since the 1940s sunglasses have been popular as a fashion accessory, especially on the beach.

Shades (Andrew Hill album)

Shades is the twenty-fourth album by American jazz pianist Andrew Hill, recorded in 1986 and released on the Italian Soul Note label in 1988. The album features six of Hill's original compositions, four performed by a quartet and two by a trio.

Reception

The Allmusic review by Scott Yanow awarded the album 4 stars calling it "Stimulating and unusual music that is difficult to classify as anything but "modern jazz"".

Mineral

A mineral is a naturally occurring substance, representable by a chemical formula, that is usually solid and inorganic, and has a crystal structure. It is different from a rock, which can be an aggregate of minerals or non-minerals and does not have a specific chemical composition. The exact definition of a mineral is under debate, especially with respect to the requirement a valid species be abiogenic, and to a lesser extent with regard to it having an ordered atomic structure. The study of minerals is called mineralogy.

There are over 5,300 known mineral species; over 5,070 of these have been approved by the International Mineralogical Association (IMA). The silicate minerals compose over 90% of the Earth's crust. The diversity and abundance of mineral species is controlled by the Earth's chemistry. Silicon and oxygen constitute approximately 75% of the Earth's crust, which translates directly into the predominance of silicate minerals. Minerals are distinguished by various chemical and physical properties. Differences in chemical composition and crystal structure distinguish various species, and these properties in turn are influenced by the mineral's geological environment of formation. Changes in the temperature, pressure, or bulk composition of a rock mass cause changes in its minerals.

Blizzard Entertainment began planning StarCraft in 1995, with a development team led by Metzen and Phinney. The game debuted at E3 1996, and uses a modified Warcraft IIgame engine. StarCraft also marked the creation of Blizzard Entertainment's film department; the game introduced high quality cinematics integral to the storyline of the series. Most of the original development team for StarCraft returned to work on the game's official expansion pack, Brood War; the game's development began shortly after StarCraft was released. In 2001, StarCraft: Ghost began development under Nihilistic Software. Unlike the previous real-time strategy games in the series, Ghost was to be a stealth-action game. After three years of development, work on the game was postponed in 2004. Development of StarCraft II: Wings of Liberty began in 2003; the game was later announced on May 19, 2007 and was released on July 27, 2010. The StarCraft II franchise continued with the StarCraft II: Heart of the Swarm expansion, which was released on March 12, 2013. The third StarCraft II installment is titled StarCraft II: Legacy of the Void, released on November 10, 2015.